Journal of the Korean Institute of Telematics and Electronics A (전자공학회논문지A)
- Volume 30A Issue 12
- /
- Pages.98-107
- /
- 1993
- /
- 1016-135X(pISSN)
A 12-Bit 2nd-order Noise-Shaping D/A Converter
12-Bit 2차 Noise-Shaping D/A 변환기
Abstract
This paper describes a design of a multi-bit oversampling noise-shaping D/A converter which achieves a resolution of 12 bits using oversampling technique. In the architecture the essential block which determines the whole accuracy is the analog internal D/A converter, and the designed charge-integration internal D/A converter adopts a differential structure in order to minimize the reduction of the resolution due to process variation. As the proposed circuit is driven by signal clocks which contains the information of the data variation from the noise-shaping coder, it minimizes the disadvantage of a charge-integration circuit in the time axis. In order to verify the circuit, it was integrated with the active area of 950
Keywords